Adds a real design system to replace the per-route ad-hoc styling:
- docs/design-system.md is the contract. Semantic CSS custom-property
tokens (color/type/spacing/radii/shadows/z-index) with verified WCAG
AA/AAA contrast ratios for both themes.
- frontend/src/lib/styles/tokens.css defines :root tokens + a
[data-theme="dark"] override + base element resets, a .form-field
helper, and a global prefers-reduced-motion rule.
- frontend/src/lib/theme.svelte.ts is a Svelte 5 runes store backing
the theme state machine (system | light | dark). localStorage key
'mangalord-theme'; matchMedia subscription that re-resolves on OS
theme change while in 'system' mode; init() / destroy() lifecycle
wired from +layout.svelte.
- frontend/src/app.html runs a synchronous inline script before
%sveltekit.head% to set [data-theme] before first paint. No FOUC.
- /settings gains a System / Light / Dark radiogroup (real fieldset +
legend + radios with lucide icons).
- Every route's <style> block is rewritten to consume tokens — home,
auth, upload (drop-zone + page list), bookmarks, manga overview,
reader.
- @lucide/svelte icons replace ad-hoc text controls per the spec:
Search (icon-only primary), LogOut (icon-only muted), Upload /
Bookmarks / Settings nav inline icons, ChevronLeft/Right for the
reader, ArrowUp/Down/Trash2 for the upload page list. The bookmark
toggle keeps its '☆ Bookmark' / '★ Bookmarked' text verbatim.
- Home search controls split into two rows: input + Search CTA on
row 1, Sort (and future filters) on row 2.
Accessibility: every icon-only button carries aria-label, every
decorative SVG aria-hidden; existing image alt text preserved;
focus-visible rings reach every interactive element including the
visually-hidden theme radios; color is never the sole conveyor.
Version bump 0.12.0 → 0.13.0 across backend/Cargo.toml and
frontend/package.json (feat: → minor per CLAUDE.md).
Bars: svelte-check 0/0, vitest 51/51, playwright 18/18, cargo test
88/88, clippy -D warnings clean. Two rounds of independent review;
verdict ship-ready.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>